Home / 81,432,076.20-122,148,114.30-72,503,867.40

Finding the Fourth Proportional to 81,432,076.20, 122,148,114.30 and 72,503,867.40

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Solution

The fourth proportional to 81,432,076.20, 122,148,114.30 and 72,503,867.40 is: 108,755,801.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,432,076.20 : 122,148,114.30 = 72,503,867.40 : x
  2. Step 2: Convert to fraction form
    81,432,076.20/122,148,114.30 = 72,503,867.40/x
  3. Step 3: Cross multiply
    81,432,076.20x = 122,148,114.30 × 72,503,867.40
  4. Step 4: Simplify right side
    81,432,076.20x = 8,856,210,682,367,244
  5. Step 5: Solve for x
    x = 8,856,210,682,367,244/81,432,076.20
  6. Step 6: Final answer
    x = 108,755,801.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.